Expansion Block/Orifice Tube: Service and Repair
EXPANSION (ORIFICE) TUBE REPLACEMENTTOOLS REQUIRED
J 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging
2. Disconnect the A/C evaporator hose from the retaining clips.
3. Separate the A/C evaporator hose at the expansion tube location.
4. Remove the expansion tube from the line.
INSTALLATION PROCEDURE
IMPORTANT: Lubricate the new expansion tube O-ring with mineral base 525 viscosity refrigerant Oil before installing into the evaporator hose.
IMPORTANT: Ensure that the short screen and arrow face toward the evaporator.
1. Install the new expansion tube.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Connect the A/C evaporator tube.
Tighten
Tighten the O-ring joint connections to 27 N.m (20 lb ft).
3. Install the A/C evaporator hose into the retaining clips.
4. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
5. Leak test the fittings of the component using the J 39400-A.